TW328062B - Biaxially oriented laminate films and magnetic recording media - Google Patents

Biaxially oriented laminate films and magnetic recording media

Info

Publication number
TW328062B
TW328062B TW086101318A TW86101318A TW328062B TW 328062 B TW328062 B TW 328062B TW 086101318 A TW086101318 A TW 086101318A TW 86101318 A TW86101318 A TW 86101318A TW 328062 B TW328062 B TW 328062B
Authority
TW
Taiwan
Prior art keywords
thermoplastic resin
resin layer
resins
biaxially oriented
thickness
Prior art date
Application number
TW086101318A
Other languages
Chinese (zh)
Inventor
Toshifumi Ozawa
Shin Iida
Mitsumine Tojo
Hideaki Watanabe
Original Assignee
Teijin Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP1869496A external-priority patent/JP3200347B2/en
Priority claimed from JP3042596A external-priority patent/JP3200349B2/en
Priority claimed from JP03469996A external-priority patent/JP3195219B2/en
Priority claimed from JP12986696A external-priority patent/JP3195235B2/en
Application filed by Teijin Ltd filed Critical Teijin Ltd
Application granted granted Critical
Publication of TW328062B publication Critical patent/TW328062B/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
    • G11B5/73935—Polyester substrates, e.g. polyethylene terephthalate characterised by roughness or surface features, e.g. by added particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73925—Composite or coated non-esterified substrates
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
    • G11B5/73929—Polyester substrates, e.g. polyethylene terephthalate comprising naphthalene ring compounds, e.g. polyethylene naphthalate substrates
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
    • G11B5/73931—Two or more layers, at least one layer being polyester
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/518—Oriented bi-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/72—Density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/08—Dimensions, e.g. volume
    • B32B2309/10—Dimensions, e.g. volume linear, e.g. length, distance, width
    • B32B2309/105—Thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]
    • Y10T428/31794—Of cross-linked polyester
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]
    • Y10T428/31797—Next to addition polymer from unsaturated monomers

Landscapes

  • Magnetic Record Carriers (AREA)
  • Laminated Bodies (AREA)

Abstract

A biaxially oriented laminate film comprising a thermoplastic resin layer A and a thermoplastic resin layer B which is laminated on one side of the thermoplastic resin layer A, in which: each of the thermoplastic resins of the thermoplastic resin layer A and the thermoplastic resin B is independently selected from the group consisting of polyester resins, polyamide resins, polyimide resins, polyether resins, polycarbonate resins, polyvinyl resins and polyolefin resins; the surface not in contact with the thermoplastic resin layer B, of the thermoplastic resin layer A has protrusions having an average height of 2 to 85 nm and an average width of 20 to 500 μm, at a density of 4 to 2,500/mm2 and has a center plane average roughness AWRa of more than 0 to not more than 10 nm, and the thickness of the thermoplastic resin layer A is at least 0.8 μm; and the thermoplastic resin layer B contains inert fine particles, the surface not in contact with the thermoplastic resin layer A, of the thermoplastic resin layer B is rougher than the surface not in contact with the thermoplastic resin layer B, of the thermoplastic resin layer A and has a center plane average roughness BWRa of 2 nm or more but less than 15 nm, and the thickness of the thermoplastic resin layer B is at least 1/2 of the average particle diameter dB defined in claim 5 below of the inert fine particles; in which the biaxially oriented laminated film has a thickness of 2.5 to 20 μm and has a Young^s modulus in the longitudinal direction of at least 450 kg/mm2.
TW086101318A 1996-02-05 1997-02-04 Biaxially oriented laminate films and magnetic recording media TW328062B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1869496A JP3200347B2 (en) 1996-02-05 1996-02-05 Laminated film
JP3042596A JP3200349B2 (en) 1996-02-19 1996-02-19 Laminated film
JP03469996A JP3195219B2 (en) 1996-02-22 1996-02-22 Laminated film
JP12986696A JP3195235B2 (en) 1996-05-24 1996-05-24 Laminated film

Publications (1)

Publication Number Publication Date
TW328062B true TW328062B (en) 1998-03-11

Family

ID=27457019

Family Applications (1)

Application Number Title Priority Date Filing Date
TW086101318A TW328062B (en) 1996-02-05 1997-02-04 Biaxially oriented laminate films and magnetic recording media

Country Status (5)

Country Link
US (1) US5912063A (en)
EP (1) EP0787579B1 (en)
KR (1) KR100262101B1 (en)
DE (1) DE69716145T2 (en)
TW (1) TW328062B (en)

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KR100448034B1 (en) * 1997-05-20 2005-06-01 데이진 가부시키가이샤 Biaxially oriented laminate film of wholly aromatic polyamide and magnetic recording media
JP4210434B2 (en) * 1997-12-12 2009-01-21 帝人株式会社 Laminated film to prevent glass scattering
EP1003156A1 (en) * 1998-04-13 2000-05-24 Teijin Limited Aromatic polyamide film for high-density magnetic recording medium
WO2000079524A1 (en) 1999-06-22 2000-12-28 Teijin Limited Magnetic recording medium and base film therefor
JP2001023149A (en) * 1999-07-08 2001-01-26 Sony Corp Magnetic recording medium
EP1069553B1 (en) * 1999-07-12 2006-09-13 Teijin Limited Magnetic recording medium and polyester film therefor
KR20020081353A (en) * 2000-03-07 2002-10-26 도레이 가부시끼가이샤 Polyester film and process for producing the same
US20030091866A1 (en) * 2001-06-01 2003-05-15 Fuji Photo Film Co., Ltd. Magnetic recording medium
US7344786B2 (en) * 2001-10-29 2008-03-18 Fujifilm Corporation Magnetic recording medium including a smooth coating layer on one side of the support
JP2004171613A (en) * 2002-11-18 2004-06-17 Fuji Photo Film Co Ltd Manufacturing method of magnetic recording medium
JP2005092991A (en) * 2003-09-18 2005-04-07 Fuji Photo Film Co Ltd Magnetic recording medium
US6895875B1 (en) * 2003-11-18 2005-05-24 General Electric Company Mercury reduction system and method in combustion flue gas using staging
US20060226561A1 (en) 2005-04-08 2006-10-12 3M Innovative Properties Company Heat setting optical films
US20100223206A1 (en) * 2008-11-14 2010-09-02 Sharrock Michael P Method of providing and selecting particles to increase signal-to-noise ratio in magnetic recording media
JP5964655B2 (en) * 2012-05-25 2016-08-03 帝人デュポンフィルム株式会社 Laminated polyester film
US20230364895A1 (en) * 2022-05-16 2023-11-16 The Glad Products Company Thermoplastic films and bags with improved strength properties created by angled ring rolling

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Also Published As

Publication number Publication date
KR100262101B1 (en) 2000-07-15
DE69716145T2 (en) 2003-06-12
EP0787579A1 (en) 1997-08-06
KR970076525A (en) 1997-12-12
US5912063A (en) 1999-06-15
EP0787579B1 (en) 2002-10-09
DE69716145D1 (en) 2002-11-14

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MM4A Annulment or lapse of patent due to non-payment of fees